Diodes Incorporated AZ1117ID-5.0TRG1

Overview

AZ1117ID-5.0TRG1 from Diodes Incorporated is a fixed-output 5.0 V, 1.35 A low-dropout linear regulator in TO252-2 package, optimized for low-voltage systems where transient response and minimum input voltage are critical. It features ±1% output voltage accuracy, thermal shutdown, current limiting, and compatibility with low-ESR ceramic capacitors for USB devices, PC motherboards, and add-on cards.

For engineers reviewing the AZ1117ID-5.0TRG1 datasheet, AZ1117ID-5.0TRG1 pinout, AZ1117ID-5.0TRG1 application, or AZ1117ID-5.0TRG1 equivalent, key selection criteria include dropout voltage (1.3 V typ at 0.8 A), PSRR (70 dB at 120 Hz), RMS output noise (0.003% of VOUT), quiescent current (≤6 mA), and industrial temperature range (–40°C to +125°C).

Technical Context

The AZ1117ID-5.0TRG1 implements a trimmed bandgap reference for precise 5.0 V regulation and integrates on-chip thermal protection that activates at +160°C junction temperature with +16°C hysteresis. Its architecture supports stable operation with ≥10 µF ceramic output capacitance and ESR < 20 Ω.

Designed for fixed-output use, it eliminates external feedback resistors and delivers load regulation of ≤15 mV across 1 mA to 1 A output current. Dropout voltage remains ≤1.4 V over –40°C to +125°C, enabling operation with minimal VIN–VOUT margin in space-constrained industrial and computing applications.

Key Specifications

Pinout & Package

TO252-2 (Type CJ) surface-mount package with exposed thermal pad; 3-pin configuration optimized for high-power dissipation and PCB heat spreading.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-dropout linear regulator applications.

Compared with MCP1703T-5002E/MB and TLV1117-50CDR, the AZ1117ID-5.0TRG1 uniquely balances 1.35 A output, TO252-2 thermal efficiency, and industrial-grade temperature operation-making it optimal for mid-to-high-power embedded systems where both current and thermal resilience are required.

Availability

AZ1117ID-5.0TRG1 is available at Aetrix Electronics and suitable for USB devices, PC motherboards, and add-on cards requiring stable component supply, long-term manufacturability, and industrial temperature support.

Supply support for AZ1117ID-5.0TRG1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions.

The AZ1117I series is part of Diodes' industrial-grade LDO portfolio, designed specifically for noise-sensitive, thermally demanding applications in computing, consumer electronics, and industrial automation where precision regulation and ruggedness are essential.

FAQ

What is the minimum input voltage required for stable 5.0 V output at 1 A?

The AZ1117ID-5.0TRG1 requires VIN ≥ VOUT + VDROP. At 1 A and +25°C, typical dropout is 1.35 V, so minimum input is 6.35 V. At –40°C or +125°C, worst-case dropout reaches 1.4 V, requiring ≥6.4 V input to maintain regulation across full temperature range.

Can this device replace the AZ1117IH-5.0TRG1 in an existing SOT223 design?

No-AZ1117ID-5.0TRG1 uses TO252-2 packaging with different pinout, thermal pad, and footprint. While electrical specs match, mechanical incompatibility prevents direct replacement. A PCB redesign with thermal pad routing and revised land pattern is required for migration.

Is an input capacitor mandatory, and what value is recommended?

Yes-an input capacitor is mandatory for stability and transient suppression. Diodes recommends ≥10 µF ceramic (X5R/X7R) with low ESR (< 100 mΩ) placed within 5 mm of the INPUT pin. Larger values (e.g., 22 µF) improve line transient response without affecting loop stability.

Does the GND pin serve only as electrical reference, or does it carry thermal current?

The GND pin is electrically the reference node and physically connected to the exposed thermal pad. It conducts both return current and heat-therefore, it must be soldered to a ≥100 mm² copper area with ≥8 thermal vias to achieve the rated θJA = 70°C/W. Isolating GND from thermal mass degrades thermal performance by up to 30°C/W.